1N4733A-T

Overview

The Vishay 1N4733A-T is a silicon planar power Zener diode designed for voltage stabilization and clipping circuits. It features a nominal Zener voltage of 5.1 V with a standard tolerance of ±5%. The device operates in the DO-41 (DO-204AL) through-hole package, providing a maximum power dissipation of 1300 mW at thermal equilibrium. Key electrical parameters include a test current of 49 mA, a reverse leakage current of 10 µA at 1 V, and a dynamic resistance of 7 Ω. The component supports a junction temperature up to 175 °C and complies with AEC-Q101 automotive standards.

Feature Summary

• Silicon planar construction optimized for high-power stabilizing and clipping applications
• Standardized Zener voltage tolerance of ±5% for consistent regulation performance
• Automotive-grade reliability compliant with AEC-Q101 qualification standards
• Robust thermal management capabilities supporting operation up to 175 °C junction temperature

Applications

• Voltage stabilization in industrial electronic systems
• Signal clipping and waveform shaping circuits
• Reference voltage generation in precision measurement equipment
• Overvoltage protection stages in automotive control modules

Procurement Notes

Verify the specific ordering suffix against official manufacturer documentation to confirm packaging configuration. The 'T' suffix indicates tape-and-reel or bulk variations distinct from standard reel quantities. Confirm RoHS compliance status and moisture sensitivity level prior to integration into automated assembly lines. Ensure lead-free soldering profiles align with the specified peak temperature limits for the DO-41 package.

Selection Notes

Select this component when a stable 5.1 V reference is required in high-power environments. The 1300 mW dissipation rating allows for robust performance without excessive heat sinking compared to lower-wattage alternatives. Verify that the 7 Ω dynamic impedance meets the noise and regulation requirements of the target circuit. Ensure the operating ambient temperature remains within the specified range to maintain the rated power dissipation capability.

Part Context

This part belongs to the 1N47xxA series of silicon planar power Zener diodes manufactured by Vishay Semiconductors. The series covers a wide voltage range from 3.3 V to 75 V, all sharing the same DO-41 axial leaded package format. The 'A' designation specifically denotes the tighter ±5% voltage tolerance compared to standard variants. This family is widely utilized in general-purpose electronics and automotive applications requiring reliable voltage regulation.

Replacement Considerations

Cross-reference with other manufacturers offering the 1N4733A specification in the DO-41 package. Verify that substitute parts match the 5.1 V nominal voltage, ±5% tolerance, and 1.3 W power rating. Ensure equivalent dynamic resistance and leakage current characteristics are maintained for circuit compatibility.